Collect. Czech. Chem. Commun.
1980, 45, 2351-2359
https://doi.org/10.1135/cccc19802351
Isomerization of ketolactone of oxabicyclo[2.2.2]octane pattern in the E ring of ursane derivatives
Eva Klinotová, Hana Skorkovská, Jiří Protiva, Jiří Urban and Alois Vystrčil
Department of Organic Chemistry, Charles University, 128 40 Prague 2
Individual author index pages
Other CCCC articles of these authors
- Iva Tišlerová*, Eva Klinotová, Jiří Klinot, Jan Sejbal, Martin Rejzek and Stanislav Hilgard
Preparation of E-Secolupane Acids and Lactones
2003, Vol. 68, Issue 4, pp. 751–778 [Abstract] - Eva Klinotová*, Jitka Čermáková, Martin Rejzek, Václav Křeček, Jan Sejbal, Petr Olšovský and Jiří Klinot
Reaction of 18β,19β-Epoxylupan-21-one Derivatives with Acids: A Way to 21,22-Disubstituted Lup-18-ene Triterpenoids
1999, Vol. 64, Issue 2, pp. 329–347 [Abstract] - Jan Sejbal, Jiří Klinot, Miloš Buděšínský and Jiří Protiva
Functionalization of Lupane-3β,28-diyl Diacetate with Chromium(VI) Oxide. Part 2
1997, Vol. 62, Issue 12, pp. 1905–1918 [Abstract] - Eva Klinotová, Václav Křeček, Jiří Klinot, Magdalena Endová, Jana Eisenreichová, Miloš Buděšínský and Martin Štícha
Glycosylation of Triterpene Alcohols and Acids of the Lupane and A-Secolupane Series
1997, Vol. 62, Issue 11, pp. 1776–1798 [Abstract] - Jiří Protiva, Thi Thu Huong Nguyen, Jiří Urban and Eva Klinotová
Reactions of 21-Acetoxy-16α,17α-epoxypregn-4-ene-3,20-dione with Nitrogen-Containing Nucleophilic Agents
1997, Vol. 62, Issue 7, pp. 1095–1104 [Abstract] - Thi Thu Huong Nguyen, Jiří Protiva, Eva Klinotová, Jiří Urban and Miroslav Protiva
Synthesis of 24-(Piperidin-1-yl, Morpholin-4-yl and 4-Methylpiperazin-1-yl)-5β-cholan-3α-ols and Four Hydroxylated 23-(4,5-Dihydroimidazol-2-yl)-24-nor-5β-cholanes
1997, Vol. 62, Issue 3, pp. 471–478 [Abstract] - Václav Křeček, Stanislav Hilgard, Miloš Buděšínský and Alois Vystrčil
E-Homolupane Derivatives Substituted in Position 17 and 22a. 1H NMR, 13C NMR and IR Spectra
1995, Vol. 60, Issue 4, pp. 619–635 [Abstract] - Thi Thu Huong Nguyen, Jiří Urban, Eva Klinotová, Jan Sejbal, Jiří Protiva, Pavel Drašar and Miroslav Protiva
Synthesis of Several Hydroxylated 23-(Benzimidazol-2-yl-, Benzoxazol-2-yl and Benzothiazol-2-yl)norcholanes and Some Related Compounds
1995, Vol. 60, Issue 2, pp. 257–275 [Abstract] - Jiří Urban and Jiří Volke
1,2,4,6-Substituted Pyridinium Derivatives-Synthesis and Properties
1994, Vol. 59, Issue 11, pp. 2545–2561 [Abstract] - Magdalena Endová, Eva Klinotová, Jan Sejbal, Bohumil Máca, Jiří Klinot and Jiří Protiva
Preparation of 2,3-Secodiacids of the Lupane Series
1994, Vol. 59, Issue 6, pp. 1420–1429 [Abstract] - Vladimír Valenta, Jiří Urban, Jan Taimr and Zdeněk Polívka
Potential Nootropic Agents: Synthesis of Some 1,4-Disubstituted 2-Oxopyrrolidines and Some Related Compounds
1994, Vol. 59, Issue 5, pp. 1126–1136 [Abstract] - Karel Šindelář, Alexandra Šilhánková, Jiří Urban, Jan Metyš, Martin Valchář and Zdeněk Polívka
Antihistamine Substances. Tricyclic Analogues of N-(4,4-Diphenyl-3-butene-1-yl)nipecotic Acid and Some Related Compounds
1994, Vol. 59, Issue 3, pp. 667–674 [Abstract] - Jiří Protiva, Václav Křeček, Luděk Vlk, Hana Malinová, Eva Klinotová, Bohumil Máca and Jiří Urban
Indirect Iodination of Estrogenes via Triazenes
1993, Vol. 58, Issue 11, pp. 2729–2736 [Abstract] - Eva Klinotová, Martin Rejzek, Hana Zůnová, Jan Sejbal, Jiří Klinot and Jiří Urban
Oxidation of 3β,28-Diacetoxy-18-lupen-21-one with Peroxy Acids: A Way to Des-E-lupane Derivatives
1993, Vol. 58, Issue 10, pp. 2505–2516 [Abstract] - Eva Klinotová, Jiří Klinot, Václav Křeček, Stanislav Hilgard, Miloš Buděšínský and Jan Malát
Structure of Dimeric Compounds Obtained from 3β-Acetoxy-21,22-dioxo-18α,19βH-ursan-28,20β-olide
1993, Vol. 58, Issue 7, pp. 1675–1691 [Abstract] - Eva Klinotová, Jiří Klinot, Václav Křeček, Miloš Buděšínský and Bohumil Máca
21,22-Disubstituted 18α,19βH-Ursane Derivatives with Oxabicyclooctane System in Ring E
1993, Vol. 58, Issue 1, pp. 173–190 [Abstract] - Václav Křeček, Miloš Buděšínský and Alois Vystrčil
Preparation of 20R and 20S Acetylamino-30-norlupane Derivatives
1992, Vol. 57, Issue 3, pp. 556–564 [Abstract] - Jan Sejbal, Jiří Klinot, Miloš Buděšínský and Jiří Protiva
Functionalization of 3β,28-lupanediol diacetate with chromium(VI) oxide
1991, Vol. 56, Issue 12, pp. 2936–2949 [Abstract] - Eva Klinotová, Václav Křeček, Jiří Klinot, Miloš Buděšínský, Jaroslav Podlaha, Jana Podlahová and Jiří Ječný
An unusual reaction of a bridged triterpenoid α-diketone with acetic anhydride
1991, Vol. 56, Issue 12, pp. 2917–2935 [Abstract] - Alois Vystrčil, Václav Křeček, Jiří Protiva and Miloš Buděšínský
Anhydrobetulin and its derivatives
1991, Vol. 56, Issue 4, pp. 886–904 [Abstract] - Jiří Protiva, Jaroslav Pecka, Jiří Urban and Jiří Zima
Synthesis of 20-iodoeicosanoic and 20-[125I]-iodoeicosanoic acids
1990, Vol. 55, Issue 6, pp. 1546–1554 [Abstract] - Jiří Urban, Zdeněk Šedivý, Jiří Holubek, Emil Svátek, Miroslav Ryska, Ivan Koruna, Antonín Dlabač, Martin Valchář, Jiřina Metyšová, Zdeněk Polívka, Karel Šindelář, Josef Pomykáček, Marta Hrubantová and Miroslav Protiva
Potential antidepressants: 1-(2-(Methoxy- and hydroxyphenylthio)phenyl)-2-propylamines
1990, Vol. 55, Issue 4, pp. 1077–1098 [Abstract] - Jiří Jílek, Jiří Urban, Vojtěch Kmoníček, Josef Pomykáček, Jiří Holubek, Emil Svátek, Oluše Matoušová, Jan Metyš, Martin Valchář, Stanislav Wildt and Miroslav Protiva
Potential anticonvulsants: 3-Chlorobenzophenone derivatives
1989, Vol. 54, Issue 8, pp. 2248–2260 [Abstract] - Jiří Jílek, Jiří Urban, Petr Taufmann, Jiří Holubek, Antonín Dlabač, Martin Valchář and Miroslav Protiva
Potential antidepressants: 2-(Phenylthio)aralkylamines
1989, Vol. 54, Issue 7, pp. 1995–2008 [Abstract] - Jan Sejbal, Eva Klinotová, Markéta Bludská, Jiří Klinot and Miloš Buděšínský
Conversion of betulin into careyagenolide (2α,3β-dihydroxy-18α,19βH-ursan-28,20β-olide)
1989, Vol. 54, Issue 4, pp. 1036–1042 [Abstract] - Jiří Protiva, Václav Křeček, Bohumil Máca, Jiří Urban, Miloš Buděšínský and Miloš Procházka
Synthesis of 4-(N-acetyl-L-tyrosyl)amino-2-iodobenzoic acid
1989, Vol. 54, Issue 4, pp. 1012–1018 [Abstract] - Jiří Klinot, Jaroslav Podlaha, Jana Podlahová, Stanislav Hilgard and Eva Klinotová
Conformation of ring A of 19β,28-epoxy-18α-oleanan-3-one in solution and in the solid state. Crystal structure and carbon-deuterium stretching frequencies
1989, Vol. 54, Issue 3, pp. 737–750 [Abstract] - Jiří Klinot, Jiří Liška, Alena Forgáčová, Miloš Buděšínský, Jiří Protiva, Stanislav Hilgard and Alois Vystrčil
Acid-catalyzed rearrangements of an A(1)-nor-triterpenoid 2α,3α-epoxide
1989, Vol. 54, Issue 2, pp. 413–429 [Abstract] - Jiří Klinot, Jan Sejbal and Alois Vystrčil
Triterpenoid 2,3-ketols, diols and their acetates: Preparation and conformation of the ring A
1989, Vol. 54, Issue 2, pp. 400–412 [Abstract] - Wilhelm Bartmann, Gerhard Beck, Wolfram Fehlhaber and Jiří Protiva
Synthese von (8RS,9SR,11RS,13E,15R)-(±)-1,2,3,4-tetranor-9,11,15-trihydroxy-16,16-dimethyl-18-oxa-13-prostensäure
1989, Vol. 54, Issue 1, pp. 189–195 [Abstract] - Jan Sejbal, Jiří Klinot and Alois Vystrčil
Photolysis of 19β,28-epoxy-18α-oleanan-2β-ol nitrites: Functionalization of 10β- and 8β-methyl groups
1988, Vol. 53, Issue 1, pp. 118–131 [Abstract] - Eva Klinotová, Helena Pavlíková, Martina Pressová, Hana Chodounská, Jiří Klinot, Jiří Protiva and Alois Vystrčil
E-seco-Acids of pentacyclic triterpenoids. Oxidative cleavage of ring E in 3β-acetoxy-21-oxo-18α,19βH-ursan-28→20β-olide
1987, Vol. 52, Issue 11, pp. 2744–2752 [Abstract] - Jiří Protiva, Václav Křeček, Ladislav Lešetický and Petr Sedmera
New intermediate for rapid synthesis of N-isopropyl-2-amino-1-(4-iodophenyl)propane (N-isopropyl-4-iodoamphetamine), labelled with radioactive iodine
1987, Vol. 52, Issue 9, pp. 2274–2280 [Abstract] - Jiří Urban, Emil Svátek, Miroslav Ryska, Jan Metyš, Stanislav Wildt and Miroslav Protiva
4-Aryl-3-(dimethylaminomethyl)thiacyclohexan-4-ols including the thia analogue of tramadol; Synthesis and analgetic activity
1987, Vol. 52, Issue 5, pp. 1340–1351 [Abstract] - Jan Sejbal, Jiří Klinot and Alois Vystrčil
Reaction of 3-keto and 2-ketotriterpenoids with 3-chloroperoxybenzoic acid in aliphatic alcohols. A new method of preparation of α-hydroxy ketones
1987, Vol. 52, Issue 4, pp. 1052–1061 [Abstract] - Jiří Protiva, Rudolf Očadlík, Eva Klinotová, Jiří Klinot and Alois Vystrčil
Ethylene dithioketals in ring a of 19β,28-epoxy-18α-oleanane; Mass spectra and reduction with deuterated Raney-nickel
1987, Vol. 52, Issue 2, pp. 501–507 [Abstract] - Jiří Klinot, Jiří Rozen, Eva Klinotová and Alois Vystrčil
A-nor-derivatives of 19β,28-epoxy-18α-oleanane: Preparation and stereochemistry
1987, Vol. 52, Issue 2, pp. 493–500 [Abstract] - Jan Sejbal, Jiří Klinot and Alois Vystrčil
Oxidation of 3β,28-lupanediol diacetate and lupane with peroxyacetic acid
1987, Vol. 52, Issue 2, pp. 487–492 [Abstract] - Jiří Klinot, Jarmil Světlý, Eva Klinotová, Miloš Buděšínský and Alois Vystrčil
Preparation of isomeric 2-methyl-1-oxotriterpenoids of the 18α-oleanane series; Conformation of ring A
1986, Vol. 51, Issue 12, pp. 2869–2878 [Abstract] - Jiří Protiva, Eva Klinotová, Jiří Klinot, Miroslav Kušiak and Alois Vystrčil
Reduction of triterpenoid ketones by chloroiridic acid and trimethyl phosphite
1986, Vol. 51, Issue 9, pp. 2029–2033 [Abstract] - Jiří Klinot, Milan Jirsa, Eva Klinotová, Karel Ubik and Jiří Protiva
Isolation of (23R) 3α, 7α,23-trihydroxy-5β-cholan-24-oic (β-phocaecholic) acid from duck bile. 1H NMR spectra of its derivatives
1986, Vol. 51, Issue 8, pp. 1722–1730 [Abstract] - Jiří Protiva, Jaroslav Pecka, Eva Klinotová and Miloš Procházka
Synthesis of 16-(4-iodophenyl)hexadecanoic acid
1986, Vol. 51, Issue 4, pp. 872–878 [Abstract] - Václav Křeček, Jiří Protiva, Miloš Buděšínský, Eva Klinotová and Alois Vystrčil
Preparation of C(18)-empiric 20,29,30-trinorlupane derivatives. 1H, 13C NMR and mass spectra
1986, Vol. 51, Issue 3, pp. 621–635 [Abstract] - Jiří Klinot, Václav Všetečka, Eva Klinotová and Alois Vystrčil
Conformation of ring A in 3-oxotriterpenoids. Dipole moments and CD spectra
1986, Vol. 51, Issue 3, pp. 611–620 [Abstract] - Jiří Klinot, Miloš Buděšínský, Eva Klinotová and Alois Vystrčil
Conformation of the A ring in 1-oxo and 3-oxotriterpenoids. Vicinal interproton coupling constants
1986, Vol. 51, Issue 3, pp. 593–610 [Abstract] - Alois Vystrčil, Václav Křeček, Miloš Buděšínský and Jiří Protiva
Isomeric oximes of 30-norlupan-20-one and its derivatives
1986, Vol. 51, Issue 3, pp. 581–592 [Abstract] - Jan Sejbal, Jiří Klinot, Jiří Protiva and Alois Vystrčil
Reactions of triterpenoid ketones with sulfur and morpholine under the conditions of Willgerodt-Kindler reaction
1986, Vol. 51, Issue 1, pp. 118–127 [Abstract] - Jiří Klinot, Jarmil Světlý, Eva Klinotová and Alois Vystrčil
Preparation of isomeric 2-methyl-3-oxolupane-28-nitriles
1985, Vol. 50, Issue 12, pp. 2918–2924 [Abstract] - Jan Sejbal, Jiří Klinot, Daniela Hrnčířová and Alois Vystrčil
Oxidation of 19β,28-epoxy-18α-oleanan-3-one and -1-one with peracids
1985, Vol. 50, Issue 12, pp. 2753–2759 [Abstract] - Růžena Míčková, Hana Hutlová, Pavel Pihera, Jiří Protiva and Vladimír Schwarz
Isolation and the structure of the products of cholesterol biodegradation by the mutant Mycobacterium sp. CCM 3529
1985, Vol. 50, Issue 5, pp. 1110–1113 [Abstract] - Vladimír Schwarz, Pavel Pihera, Jiří Protiva and Růžena Míčková
Biodegradation of cholesterol by a mutant of the Mycobacterium species
1984, Vol. 49, Issue 11, pp. 2713–2719 [Abstract] - Václav Bártl, Vojtěch Kmoníček, Zdeněk Šedivý, Emil Svátek, Jiří Protiva and Miroslav Protiva
Thioxanthene derivatives of pharmacological interest: 1,2,4-Trichloro and 2,4,5,6-tetrachloro derivatives of 9-(3-dimethylaminopropylidene)thioxanthene
1984, Vol. 49, Issue 10, pp. 2295–2308 [Abstract] - Jiří Urban, Antonín Dlabač, Martin Valchář and Miroslav Protiva
Potential noncataleptic neuroleptic agents: 2,3-Dichloro-10-[4-(2-hydroxyethyl)piperazino]-10,11-dihydrobenzo[b,f]thiepin
1984, Vol. 49, Issue 4, pp. 992–1001 [Abstract] - Jiří Jílek, Josef Pomykáček, Jiří Holubek, Emil Svátek, Miroslav Ryska, Jiří Protiva and Miroslav Protiva
Reactions of 4,4'-disubstituted diphenyl sulfides with chloroacetyl chloride and aluminium chloride
1984, Vol. 49, Issue 3, pp. 603–620 [Abstract] - Eva Klinotová, Jiří Protiva, Jiří Klinot and Alois Vystrčil
Reaction of 30-nor-18-lupene derivatives with bromine and peracids
1984, Vol. 49, Issue 1, pp. 141–149 [Abstract] - Eva Klinotová, Jiří Klinot, Jiří Protiva, Jiří Urban and Alois Vystrčil
Reaction of 30-nor-19(20)-lupene derivatives with bromine
1983, Vol. 48, Issue 12, pp. 3444–3454 [Abstract] - Karel Šindelář, Jiří Holubek, Miroslav Ryska, Emil Svátek, Jiří Urban and Miroslav Protiva
11-(Dimethylaminoalkyl)-6,11-dihydrodibenzo[b,e]thiepin-11-carbonitriles and some related compounds
1983, Vol. 48, Issue 7, pp. 1898–1909 [Abstract] - Ján Galoci, Miloš Procházka and Eva Klinotová
Pyrolysis of 2-acetoxycarboxylic acids
1983, Vol. 48, Issue 6, pp. 1729–1733 [Abstract] - Alois Vystrčil, Václav Křeček and Miloš Buděšínský
Elimination reaction of angular hydroxymethyl groups of 20(29)-lupene derivatives
1983, Vol. 48, Issue 5, pp. 1499–1507 [Abstract] - Karel Šindelář, Jiří Holubek, Miroslav Ryska, Emil Svátek, Jiří Urban, Jaroslava Grimová, Irena Červená, Marta Hrubantová and Miroslav Protiva
Dibenzo[b,f]thiepin-10-carbonitrile, its 10,11-dihydro derivative, some transformation products and related compounds
1983, Vol. 48, Issue 4, pp. 1187–1211 [Abstract] - Jiří Protiva, Václav Křeček, Josefa Křečková, Eva Klinotová and Alois Vystrčil
The synthesis and the mass spectra of 28,29,30-trinoroleanane derivatives with a double bond in the ring E or D
1983, Vol. 48, Issue 3, pp. 928–936 [Abstract] - Irena Valterová, Jiří Klinot and Alois Vystrčil
Preparation and antibacterial activity of di-, tri- and tetraoic acids derived from 3,4-secolupane
1983, Vol. 48, Issue 2, pp. 649–661 [Abstract] - Jiří Tax, Petr Sedmera, Jindřich Vokoun, Jiří Urban, Jaroslava Karnetová, Karel Stajner, Zdenko Vaněk and Vladimír Krumphanzl
Phenazines from Streptomyces cinnamonensis
1983, Vol. 48, Issue 2, pp. 527–532 [Abstract] - Miroslav Protiva, Karel Šindelář, Vladimír Valenta, Jiří Holubek, Emil Svátek, Miroslav Ryska, Jiří Schlanger, Jiří Urban and Marta Hrubantová
Reactions of 11-chloro-11-phenyl-6,11-dihydrodibenzo[b,e]-thiepin with piperidine and some further nucleophiles
1982, Vol. 47, Issue 11, pp. 3094–3113 [Abstract] - Karel Šindelář, Jiřina Metyšová, Jiří Holubek, Emil Svátek, Jiří Protiva and Miroslav Protiva
Tricyclic psychotropic agents containing two chalcogen atoms in the central ring: 8-Substituted 6-(4-piperidyl)-6H-dibenz[b,e]-1,4-oxathiepins
1982, Vol. 47, Issue 11, pp. 3077–3093 [Abstract] - Karel Šindelář, Jiří Holubek, Miroslav Ryska, Antonín Dlabač, Jiřina Metyšová, Emil Svátek, Marta Hrubantová, Jiří Protiva and Miroslav Protiva
Tricyclic psychotropic agents containing two chalcogen atoms in the central ring: Derivatives of 11H-dibenz[b,f]-1,4-oxathiepin
1982, Vol. 47, Issue 3, pp. 967–983 [Abstract] - Jiří Protiva, Luděk Lepša, Eva Klinotová, Jiří Klinot, Václav Křeček and Alois Vystrčil
Homogeneous hydrogenation and deuteration of pentacyclic triterpenoids: Double bonds in side-chains
1981, Vol. 46, Issue 11, pp. 2734–2741 [Abstract] - Jiří Protiva, Eva Klinotová, Hana Skorkovská and Alois Vystrčil
Mass spectra of 18α,19βH-ursane derivatives with a lactone arrangement of the ring E
1981, Vol. 46, Issue 4, pp. 1023–1030 [Abstract] - Karel Šindelář, Miroslav Ryska, Jiří Holubek, Emil Svátek, Jiřina Metyšová, Jiří Protiva and Miroslav Protiva
Fluorinated tricyclic neuroleptics with prolonged action: 3-Fluoro-8-trifluoromethyl derivatives of 10-(4-methylpiperazino)- and 10-[4-(2-hydroxyethyl)piperazino]-10,11-dihydrodibenzo-[b,f]thiepin
1981, Vol. 46, Issue 1, pp. 118–140 [Abstract] - Jiří Urban, Miroslav Marek, Jiří Jarý and Petr Sedmera
13C NMR study of tetrosides and their derivatives
1980, Vol. 45, Issue 10, pp. 2779–2783 [Abstract] - Jiří Protiva, Hana Skorkovská, Jiří Urban and Alois Vystrčil
Triterpenes and steroids from ganoderma applanatum
1980, Vol. 45, Issue 10, pp. 2710–2713 [Abstract] - Irena Valterová, Jiří Klinot and Alois Vystrčil
3,4-Seco-3,28-lupanedioic acids substituted in the side chain at C(5)
1980, Vol. 45, Issue 7, pp. 1964–1973 [Abstract] - Eva Klinotová, Hana Skorkovská, Jiří Protiva and Alois Vystrčil
Structure and the properties of 18α,19βH-ursane derivatives with a lactone bridge to ring E
1980, Vol. 45, Issue 5, pp. 1366–1378 [Abstract] - Jiří Klinot, Jarmil Světlý, Dagmar Kudláčková, Miloš Buděšínský and Alois Vystrčil
Preparation of 2-methyl-3-oxo triterpenoids of 18α-oleanane series and the conformation of ring A
1979, Vol. 44, Issue 1, pp. 211–225 [Abstract] - Vladimír Pouzar and Alois Vystrčil
Preparation of 12,20-disubstituted lupane derivatives
1979, Vol. 44, Issue 1, pp. 194–210 [Abstract] - Eva Klinotová, Stanislav Bosák and Alois Vystrčil
The preparation of 19αH-lupeol acetate and its derivatives
1978, Vol. 43, Issue 8, pp. 2204–2216 [Abstract] - Vladimír Pouzar and Alois Vystrčil
Preparation of 29-acetoxy-30-norlupan-20-one derivatives with the substituted ring C
1978, Vol. 43, Issue 8, pp. 2190–2203 [Abstract]
